Agonist vs. Protagonist

Difference Between Agonist and Protagonist
Agonistnoun
Someone involved in a contest or battle (as in an agon), protagonist.
Protagonistnoun
(authorship) The main character, or one of the main characters, in any story, such as a literary work or drama.
Agonistnoun
The muscle that contracts while the other relaxes.
When bending the elbow, the biceps is the agonist.Protagonistnoun
A leading person in a contest; a principal performer.
Agonistnoun
A molecule that can combine with a receptor on a cell to produce a physiological reaction.
Acetylcholine is an agonist at the cholinergic receptor.Protagonistnoun
(proscribed) An advocate or champion of a cause or course of action.
Agonistnoun
the principal character in a work of fiction
Protagonistnoun
a person who backs a politician or a team etc.;
all their supporters came out for the gamethey are friends of the libraryAgonistnoun
someone involved in a contest or battle (as in an agon)
Protagonistnoun
the principal character in a work of fiction
Agonistnoun
a muscle that contracts while another relaxes;
when bending the elbow the biceps are the agonistAgonistnoun
(biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction